Date post: | 31-Mar-2015 |
Category: |
Documents |
Upload: | john-nettles |
View: | 214 times |
Download: | 2 times |
Mike Albrow Proton Driver Workshop, October 2004
The Proton Driver and the Tevatron Collider
Tevatron now 2009 and beyond (?)
Experiments now and foreseen (or foresee-able?)
The GTeV idea, and “The Future of QCD at the Tevatron”
Is there a “physics shopping list” for 2004+ ?
Other long term uses for Tevatron or its tunnel
Mike Albrow Proton Driver Workshop, October 2004
CDF BTeV
The Future of QCD at the Tevatron
Mike Albrow Proton Driver Workshop, October 2004
CDF Detectors
MiniPlugs
Possible mini-upgrades for diffractive physics:Precision roman pots on both beamsFully instrument very forward region (< 3 deg)
em + had cals, muons
Mike Albrow Proton Driver Workshop, October 2004
Forward “Cone” Spectrometer for CDF?0 00.5 θ 3 3.6 η 4.9
Now: luminosity counters + 1.1 interaction length calorimeter
Possible upgrade:
Tracking (in mag field) electrons & photons hadron calorimetry – jets muons
Could be done if sufficiently motivated (and funded!)
& Beyond CDF?
Mike Albrow Proton Driver Workshop, October 2004
D0 Detector
Possible mini-upgrade:Roman pots beyond dipoleson both beams
For Run II added:
Solenoidal fieldSilicon trackingScintillating fiber trackingRoman pots with fibers
Tracking (incl. muons)+ L.A. Calorimeter
Mike Albrow Proton Driver Workshop, October 2004
BTeV: B Physics at the Tevatron2009
Primary motivation:CP-violation and mixing inb- and c-sectors
But good QCD capability.
Excellent tracking, vertexing,particle ID: h, e,
γ, μ
Could add: hadron calorimeter for jets, veto counters for gaps,roman pots for diffraction ...Second arm?
Beam is at 7.5
Mike Albrow Proton Driver Workshop, October 2004
The Future of QCD at the Tevatron
Workshop May 2004: http://conferences.fnal.gov/qcdws/
Very active program will continue > 10 x statisticsCDF and D0 detectors stop detecting in 2009 (probably)Before:
Could add precision (Si) roman pots on both sidesCould upgrade CDF very forward (cone spectrometers)Special running: root s-scan (630 – 1960), low B-field run
BTeV: Supplement B-physics program with more QCD studies:+ roman pots, hadron calorimeter, veto (rap-gap) counters, + ?
Plan: “Yellow Book” on physics issues (cf LHC, HERA etc)Fred Olness, Mark Strikman, MGA eds
TeV4LHC Workshop 2004-5: QCD ... Diffraction and Forward Subgroup
Mike Albrow Proton Driver Workshop, October 2004
The Future of QCD at the Tevatron ---- May 2004
http://conferences.fnal.gov/qcdws/
Mike Albrow Proton Driver Workshop, October 2004
Fri
Sat
Mike Albrow Proton Driver Workshop, October 2004
What do we need to do? (~ 5 year time-scale)
T JJHigh E , M frontier
TLower p large distances
Gain slow, LHC take-over
Low B runs, roman pots at small t
c
More statistics - but tests limited
e.g. B = bc + γ's spectroscopy
understand jets, for jet spectroscopy t,H
WW and ZZ pairs
Diffractive sector, especially:
DPE (G, hybrids, hyperons, χ, jets, b-jets)
precision
b
c
LHC take-over
Very forward production
Mike Albrow Proton Driver Workshop, October 2004
“Let a Hundred Flowers Bloom” approach
There is spare real estate at C0 with collisions for free.There could be collisions also elsewhere (at some cost)Beyond BTeV all options are open.Detector technology advances, not always exploited.
Example:Use some high field dipoles much longer straight sectionsSophisticated MPS = multiparticle spectrometer (~ hi-tech MIPP)
T
, , , , (... , ), , ,...{ },{ },...
0.05 1.0 p 0 few GeV/cF
K p p s c b bcs bbc
x
Unexplored territory & very rare states, includingMaybe some “small” specialised experiments?
d, t
Mike Albrow Proton Driver Workshop, October 2004
Low mass “Vacuum Excitation” a.k.a.Double Pomeron Exchange
Diffractive Excitation of the proton
Diffractive Excitation of the ‘vacuum’
ANY strongly interacting virtual state in the vacuum can bemade real by hh (any h) collision (4-p conservation)
Minimum rapidity gap for pomeronexchange dominance ~ 3 units
( ) ln ln 3Xy symmetric s M
Mike Albrow Proton Driver Workshop, October 2004
Tevatron is the perfect place
for low mass DPE.RHIC (pp) is next best.
BEAM CEN Xp
sy =ln ; y spans 2 ln M ; 3 units GAP
M
DPE Mass Range, Different Machines
Mike Albrow Proton Driver Workshop, October 2004
G PC
0
I J (DPE)
0 0
0 0
0 1 Not at 0
0 1
0 2
Why at Tevatron?
Highest sqrt{s} studied = 63 GeV (ISR) ... just OK < 3 GeV
- + -
c b 1 2
+ -
ISR data limited to , K K , pp, 4π
Important: χ ,χ states (spectra vs t ,t ,Δ )
4K, K K ,states with η's, etc
, ... , ... γγ exclusive and inclusive
Could be major program using Tevatron as “glue-glue collider”Not being done in CDF because no (high-x) roman pots & prioritiesWill be done in (I think very) limited fashion in D0Some could be done in BTeV (but not very central)No LHC experiment can do this (?) [ALICE? Trigger?]But it does not like high L even though some channels are rare ... want <n/x> ~ 1 for clean events. (3E31) ... more bunches?
Mike Albrow Proton Driver Workshop, October 2004
TeV beams for fixed target physics?
Store high intensity p-beam, bring ILC “500 GeV” e-beaminto collision for ep. Defines ILC site (+snake transfer line).How to get very small p beam size at ep focus? What Lum?
ep could be very interesting: ILC+TeV or HERA or LHC
Eventual injector for VLHC? Tevatron will be very old,will probably want to put new higher field ring in tunnel.
Other non-neutrino uses for PD “Tevatron”?
xS-bendLow field“Foster magnets”?
Mike Albrow Proton Driver Workshop, October 2004
Conclusions (?)
There is a lot of physics (mostly QCD) to do, even after 2009
New QCD ideas can be implemented in CDF, D0 and BTeV
Unlikely that the big CDF/D0 detectors will run much beyond 2009without a phase transition in enthusiasm for QCD (Nobel for IR QCD?)
Smaller collaborations, detectors, could develop (cone spectrometers +)
Hard to identify in 2004 physics needing high-L in 2014 that is excitingenough to make a case (I suppose making anti-Helium is not enough!)
Things can change!